Antiskid device



M. F. SCHOPF AND L. J. CHRISTIANSON, ANTISKID DEVICE. APPLICATION FILED APH. 21, 1920.

2 SHEETS-SHEET l'.

Patmfd Mm 26, 1921..

M. F. SUHOPF AND L. J. C HRISTlANSON.

ANTISKID DEVICE. APPLICATION FILED APH. 2|. 1920.

1,375,735. Patented Apr. 26, 1921o 2 SHEETS-SHEET 2.

MICHAEL F. SCHOPF AND LO'UES J. GHRSTIANSON, OF GI-ICAGO, ILLNOIS.

.l-LNTISKED DEVECE.

Specification of Letters Patent.

Patented Apr. 2d, i921.

Application filed .april 21, 1920. Serial No. 375,571.

To all who/m. 'it may conce/m B it known that we, MICHAEL l?. Sonori1 :nd horns J. Ci-rnis'rianson, citizens ci the united States, residing at Chicago, in the county of Cook and lunite ot' illinois, have invented. certain new and useful improvements in lintiskid Devices, ci which the iollowing is a description. Y

rUur invention belongs to that general class ot devices known as anti-skid devices adapted to be used on vehicle wheels in order to prevent skidding, to increase the traction and to prevent the wheels spinning. The invention has among its objects the production of a device of the kind describen that is simple, convenient, durable, reliable, eliicient, inexpensive and satisfactory for use wherever Jround applicable. lt has particularly as an object the production of a device that willnot in anyway cause eX- i cessive wear on a tire, and which will be particularly efficient and durable under all conditions. ManyV other objects and advantages oit the construction herein shown and described will be obvious to those skilled in the art from the disclosure herein given.

To this end our invention consists in the novel construction, arrangement and combination of parts herein shown and described and more particularly pointed out in the claims.

ln the drawings, wherein like reference characters indicate like or corresponding parts,

Figure 1 is a view in elevation of a wheel with our device applied thereto;

Fig. 2 is a top plan view of the same;

Fig. 3 is a sectional view taken substantially on line 3-3 of Fig. 1;

Fig. l is a plan view of one oit the pads; and

Fig. 5 is a sectional view taken substantially on line 5-5 of Fig. l.

Referring to the drawings, in which the preferred form ot our device is shown, l'l

etc., represent a series of pads or tread meml bers which are suitably attached together and mounted upon a wheel and form a tread therefor. Each oi the treads is preferably constructed of strands oi wire, each strand of which is made up of a plurality of small strands, the parts being suitably secured together so as to substantially form an integral or one-part structure. As most clearly shown in Figs. l and 5, 2 and 3 rep resent strands extending lengthwise and woven together in any desired manner, l being preferably a crossstrand which may be tlattened out and which woven in between the strands 2 and 3.

The various strands are suitably secured together at the ends oi' the pad, for example, by welding or otherwise securing the ends 5 thereto. When constructed, each pad, while to a certain extent flexible and made up oit many surta ses, is substantially in one part. is shown, each pad is provided with the desired number of `'as'tening members or links 6, which are preferably looped as at 7 -7 raround one of the stra ids 2 at each side, or 3, as the case may be, depending upon which strand is at the under side, the being connected t@ links 8 8 which connect with the side chains 9--9 of suitable construction.

We have illustrated the wheel telly 11, as Jfor example in an automobile wheel, upon which is arranged a rim 12 oit suitable form and construction arranged to cooperate with the casing 13. within which be arranged the inner tube lll or the equivalent. The particular wheel, rim and tire construction forms no part or the present invention.y wWe secure the circumferential chains 9 to the wheel at the desired number et points by straps 15 or the equivalent, which may be l provided with buckles 16 so that the device may be securely locked on the wheel.

yEhe ends of the chains 9 may be connected by links 17 or the equivalent. The device is applied substantially as shown in Fig 1, 2 and 8, and secured by the straps or the equivalent, as previously mentioned. With this construction, it will be noted that each pad has a considerable bearing on the casing, and consequently does not have the same tendency to cut or injure the casing as where cross-chains are employed. The ends tire and still give satisfactory service, or substantially so, until it is completely used up, which time the seine may be renewed. Obviously, by covering a considerable portion off the tire, the saine to n large extent pre ents punotures, and it has been found that the seme lies e tendency to 1si'event blow-outs, :is it is substantially e reinforce nient to the casing'. While we prefer to use the straps l5, or the equivelents, very satisfactory results are obtained without the straps.

Having thus described our invention, it is obvious that viti-ions immaterial modifien-I tions may be mede in tlie seine without departing iroxn the spirit oi our invention; ,hence we do not wish to lee understood es limiting;- ourselves to the exact forni, construction, arrangement sind combination of parts lierein shown end described except delined by the appended claims, or uses mentioned.

lll/liet we claim es new and desire to secure ,by Letters Patent is:

l. An enti-skid device consisting of e plurality of anti-skid pad members, eecli lieving e suitable freine provided with side portions, and e plurality of woven wire strands secured in said side portions, seid strands being arranged whereby they cross one un tlie across sein base beneath said longitudinal woven strands.

i gviti-skid dev'ce compris" it plurality of enti-skid mds adapted 'lo loe dis- ,of led around tireecli of said pads inw with sides, e plurality pad, seid strands being constructed to cross one another, and Ineens for securing` the pads to the tire.

ln testimony whereof, we lieve hereunto signed oni' nsines in the presence oit' two subscribing witnesses.

ll/lCl-lilllli l?. SCl-OPF. LOUIS J. CHRISTIAN SON.

lWit-nesses Y RoY W. HILL, Brin'rnii HARTMANN.

ree to the sides ci euch' 

